Summary: Screen Studio adds interactive demos for features

Why It Matters: Showing how features work makes them easier to understand.

What Changed:

• Added "Cursor demo" section with "Movement style" options (Rapid, Quick, Default, Slow).
• Added "play_arrow" and "pause" buttons next to several feature descriptions, suggesting interactive demos. These appear next to:
  • "iPhone and iPad model detection"
  • "Customize device frame and color"
  • "Motion blur"
  • "Shareable presets"
  • "Record and show keyboard shortcuts"